Portal:Agriculture and agronomy

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Agriculture and agronomy portal

Ploughing rice paddies with water buffalo, in Indonesia.

Agriculture is the cultivation of animals, plants, fungi and other life forms for food, fiber, and other products used to sustain life. Agriculture was the key implement in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the development of civilization. The study of agriculture is known as agricultural science. The history of agriculture dates back thousands of years, and its development has been driven and defined by greatly different climates, cultures, and technologies. However, all farming generally relies on techniques to expand and maintain the lands or water areas suitable for raising domesticated species. For plants, this sometimes requires a form of irrigation, although much agriculture is rainfed, and there are methods of dryland farming; pastoral herding on rangeland is still the most common means of raising livestock. In the developed world, industrial agriculture based on large-scale monoculture has become the dominant system of modern farming, although there is growing support for sustainable agriculture. The major agricultural products can be broadly grouped into foods, fibers, fuels, and raw materials.

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USDA Hardiness zone map.jpg
(Pictured left: USDA Hardiness Zones in North America)

A hardiness zone (a subcategory of Vertical Zonation) is a geographically defined area in which a specific category of plant life is capable of growing, as defined by climatic conditions, including its ability to withstand the minimum temperatures of the zone (see the scale on the right or the table below). For example, a plant that is described as "hardy to zone 10" means that the plant can withstand a minimum temperature of -1°C. A more resilient plant that is "hardy to zone 9" can tolerate a minimum temperature of -7°C. First developed for the United States by the Department of Agriculture (USDA), the use of the zones has been adopted by other nations.

Based on the average annual minimum temperature for a given location, the USDA map provides an easy guideline for categorizing locations suitable for winter survival of a rated plant in an "average" winter. Since temperatures in the non-coastal-adjacent areas of the continent rarely present a consistent experience from year to year, and occasionally present a major—and often agriculturally devastating—deviation from the average minimum, the map has limitations for much of the country as a basis for using with long-term reliability, at least in areas close to the margin of a plant's rated hardiness-zone.

In 2003, the American Horticultural Society (AHS) produced a draft revised map, using temperature data collected from July 1986 to March 2002. This was a period of warmer winters than the 1974–1986 period, especially in the eastern U.S.A. The 2003 map placed many areas approximately a half-zone higher (warmer) than the 1990 map had. Reviewers noted the map zones appeared to be closer to the original 1960 map in its overall zone delineations. The 2003 AHS draft map purported to show finer detail, for example, reflecting urban heat islands by showing the downtown areas of several cities (e.g., Baltimore, Maryland, Washington, D.C. and Atlantic City, New Jersey) as a full zone warmer than outlying areas. The map excluded the detailed a/b half-zones introduced in the 1990 map, an omission widely criticized by horticulturists and gardeners due to the coarseness of the resulting map. The USDA rejected the AHS 2003 draft map; the agency stated it would create its own map in an interactive computer format. As of August 2010 the AHS and the National Arboretum websites still present the 1990 map as current. In 2006, the US National Arbor Day Foundation completed an extensive updating of U.S. Hardiness Zones. It used essentially the same data as the AHS. Once the Foundation analyzed the new data, it revised hardiness zones, reflecting the generally warmer recent temperatures in many parts of the country. The Foundation's 2006 map appears to validate the data used in the AHS 2003 draft. The Foundation also did away with the more detailed a/b half-zone delineations.


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Sustainable agriculture

Sustainable agriculture is the practice of farming using principles of ecology, the study of relationships between organisms and their environment. It has been defined as "an integrated system of plant and animal production practices having a site-specific application that will last over the long term:

Sustainable agriculture in the United States was addressed by the 1990 farm bill.[2] More recently, as consumer and retail demand for sustainable products has risen, organizations such as Food Alliance and Protected Harvest have started to provide measurement standards and certification programs for what constitutes a sustainably grown crop.[3]

  1. ^ Gold, M. (July 2009). What is Sustainable Agriculture?. United States Department of Agriculture, Alternative Farming Systems Information Center.
  2. ^ Food, Agriculture, Conservation, and Trade Act of 1990 (FACTA), Public Law 101-624, Title XVI, Subtitle A, Section 1603
  3. ^ Organic and non-GMO Report. New certification programs aim to encourage sustainable farming.

Categories: Sustainable agriculture, Sustainability

Did you know...

...some kinds of raw beans, especially red and kidney beans, contain a harmful toxin (lectin phytohaemagglutinin) that must be destroyed by cooking? A recommended method is to boil the beans for at least ten minutes; undercooked beans may be more toxic than raw beans.[1]
Other "Did you know" facts... Read more...

Agriculture and agronomy news

From the Wikinews Agriculture portal
  • September 14: Scientists claim decrease in hotness of Bhut Jolokia
  • July 28: Scientists analyse effects of global warming, atmospheric ozone on crops
  • September 25: 2012 Report on Gender Equality and Development looks at women's issues in India
  • June 15: Gubernatorial candidate Tom Tancredo comments on North Colorado proposal
More news on Wikinews

Agriculture and agronomy journals

Pen & Earth
  • Agronomy Journal - the American Society of Agronomy
  • Agronomy for Sustainable Development Journal
  • European Journal of Agronomy
  • Journal of Agronomy and Crop Science

See also:

  • FAO Documents
  • Organic Eprints- Organic Agriculture

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References

  1. ^ "Foodborne Pathogenic Microorganisms and Natural Toxins Handbook: Phytohaemagglutinin". Bad Bug Book. United States Food and Drug Administration. Retrieved 2009-07-11. 
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